I wasn't to crazy about this 2000 flushes tabs. They work ok but I did not repurchase them. They seem to disappear quick/dissolve in my toilet. I rather just scrub the toile every couple of days then waist money on these tabs. The smell was weird also. I don't know maybe the tabs I got were old but I did not like them.
I try to use these often as they help with bathroom odors and help with keeping the bowl clean. However, they are not a magical fix I still routinely clean my toilets. Reasonably priced. I prefer this type because it doesn't make the water blue.